hi, just want to see what u's recone about a new boot setup that im thinking about doing as im sic of my current one

can it be done?

thanks

Looks good 8) Any reason why 1 x 12" and 1 x 15" :?: :?:

Do you get better sound :?:

Do you get better sound :?:

if they were Sony :lol:

*give dan the high 5* :p

Go look at AS cars for inspirations :) Check out Petir's Sony Install, it is masterpiece by John of Wolf AutoDesign.. no crappy install sh*t

Maybe Ben should check it out too coz he's SONY too :D

Go look at AS cars for inspirations :) Check out Petir's Sony Install, it is masterpiece by John of Wolf AutoDesign.. no crappy install sh*t

Maybe Ben should check it out too coz he's SONY too :D

and exactly where would i go to have a peek at this masterpiece?

[quote:9f43c7953c="CYPHER-VRX"]
Do you get better sound :?:

if they were Sony :lol:

*give dan the high 5* :p[/quote:9f43c7953c]

Yeh go Sony

Looks good, sounds good, It must be a Sony 8)
Where do we see this master piece ?

dude, mixing driver sizes is REALLY not a good idea. :x
Some people seem to think ' If I have an 12 & a 15 (or 2x10s, a 12 & a 15 in the case of someone I know), it'll sound better cause they all cover different frequencies... eeernt.. WRONG.. :shock:

Don't ask me to explain exactly how it works, but if u mix driver sizes or even driver manufacturer u seriously compromise both SQ & SPL.

Basically because the different sized drivers have different response & trallel times, their waveforms start to counteract each other, both to make it quieter, & lower SQ.

As for the SONY thing no offence, but their is PLENTY better out their. I should know... I have nearly $4G of the stuff in my Lancer. :? I not adviseing u against it.. I was happy with it for nearly 2yrs, but IMO u would be seriously wanting to listen to other brands b4 buying. If u prefer the Sony, then by all means go ahead, but like I said, there is much better out there.

Just my 2c worth. :D

The design looks good other then that. :p

which way are we looking at the picture? :?

also. i feel with a 15 on one side and a 12 on the other, a bit of unbalancing may occur.

Trav

and exactly where would i go to have a peek at this masterpiece?

Compared to your Sony Set up.. this is what I call ICE baby :D

http://gallery.importclubaustralia.com/2003-AutoSalon/CIMG0031

His Bro Kilat who has the T/C IS200 has a beaut set up too..

Sandman
[quote:58109aee31]Basically because the different sized drivers have different response & trallel times, their waveforms start to counteract each other, both to make it quieter, & lower SQ.[/quote:58109aee31]


i think it maybe the way thier tuned, to start off with i only had a 12" that was good and now with the 15" aswell its realy good, i have the 15" tuned more for PUNCH (real low Hz) i mihgt go twin 15s later on

one of my old mate's had twin pioner 12"s 600w each running off a cadence mono block, and mine s%$ts over his............he gets real mad because he spent $3000 on his system, and iv gone cheap as possable about $1500

Tiphareth, the subs are right at the back of the car.

thanks guys

Hey guys,

I posted a thread about mixing driver sizes quite a while back, and IMHO you probably won't get any benefit out of using a 12" with a 15", but you may create the psychoacoustic phenomenon known as Comb Filtering. This is probably the cause of the perceived lower SQ and SPL that The Sandman is talking about. Comb Filtering is an undesirable affect caused when sound waves reach the listenner's ears at a miniscule delay of around 5-10ms (it is also called "phasing" although this is technically a longer delay of around 25ms to 50ms). That short delay may be enough to cause cancellations of certain frequencies, especially low frequencies, this is because one signal may be in the positive phase of the waveform while the other signal may be in the negative phase, thus producing a perceived zero amplitude.

Anyway, that's the details, but putting it simply, if your drivers are mounted on-axis and are correctly aligned (ie. the voice coils are on the same axis) then comb filtering should not occur, especially if your not even in the same enclosure as the drivers. But, as for mixing driver sizes, there is nothing really wrong with it (provided you follow the previous guidelines), however if you are going to use different sizes use them for a better sound response in general. A 15" driver will give you awesome low end, hopefully down to 12-20Hz, however due to it's greater mass, cone size and inertia (resistance to move) it will take longer to displace the air. A 10" driver (which is what I would suggest you put with the 15") will be much more efficient because it is smaller and lighter, thus it will be better suited to producing transients (ie. the fast, attacking part of a waveform, eg. the snap of a kick drum or the crack of a snare drum). The combination of a 15" and a 10" will give you a punchy sound with plenty of dubby low end.

Just to emphasize my point, look at a common bass guitarist's rig, 4x10" cab on top of a 1x15" cab - it's the best of both worlds.

Also, if when combining two different sized subs you believe the SQ or SPL isn't as good as it should be, try wiring one of the subs out-of-phase, this may bring both drivers in-phase and thus reduce the effect of Comb Filtering. It's really a matter of experimenting with different speaker placement and wiring combinations.

As for the "unbalancing" - low frequencies are omni-directional. The human ear will not perceive low frequencies coming from different directions. Not to mention that the boot of a car is a resonating chamber void of perceived directionality.

Hope this helps, design looks good dude.

If he spent 3 grand on pioneers and amp he got ripped!! You could just about have it running on an alpine v12 for that. pioneer are now selling 2 800w pioneers in a box for about $500.

[quote:a36810c50e="CYPHER-VRX"]
Do you get better sound :?:

if they were Sony :lol:

*give dan the high 5* :p[/quote:a36810c50e]


New Moto for Sony "Its Craptastic!" :)


Sorry I hate sony, for some reason there shit always f*cks up with me and for that matter most of my mates.

SOny sucks the big fat steaming turds of the devil!!!! :evil:

you guys are just jealious :lol:

No................................ I don't think so :D

[quote:1fc8456a6d]
one of my old mate's had twin pioner 12"s 600w each running off a cadence mono block, and mine s%$ts over his............he gets real mad because he spent $3000 on his system, and iv gone cheap as possable about $1500
[/quote:1fc8456a6d]

Thoes newer pioneer subs are crap, pioneer make some really great stuff though, me and all my mates run pioneer gear in our cars wouldnt even think twice about another brand for headunits and splits and stuff.

I wouldnt mix subs, better off sellin your 15 and buying another 12, trust me on this, i have 2 15's in the back of mine, there great for makin heaps of noise but the sq is not real good.

ah got ya,a nd those round things in the picture are the wheel arches 8)

oh and im with the sony bagging too. sorry guys :)

Thanks for the input guys, im ganna stic with the 12 and 15 for now, can aways change it later, if i do change it i think ill go for 2 10s and a 15

the shape of the sub box's and Lts of air are going to be the hard part, oh yeah and where to put the ports?

Damien,
i think i know what you mean, i noticed in some parts of some songs that used to realy pump with just the 12 are now quiter with both the 12 and 15 but some other parts are louder, i dont quite understand that SQ and SPL thing

thanks

Yep, sounds like some frequency cancellation happening.

SQ = sound quality, you know, stuff like clarity, separation of instruments, depth etc. It's kind of an audiophile thing.
SPL = Sound Pressure Level (measured in dB); this is the scale used to define how loud something is. A face-to-face conversation will probably be around the 70-80dB SPL mark. The Threshold of Feeling is around the 115dB SPL mark and I think the Threshold of Pain (where permanent hearing damage occurs) is around 130dB SPL, although I may be slightly off, it's been a few beers since I finished my Degree in Audio Engineering, hehe.

Just experiment with speaker placement before you set it in concrete. Even putting two 12" drivers together can cause Comb Filtering if you don't align them properly.

Good luck dude!